• Annals of surgery · Aug 2016

    Diagnostic Accuracy of Procalcitonin and C-reactive Protein for the Early Diagnosis of Intra-abdominal Infection After Elective Colorectal Surgery: A Meta-analysis.

    • François Cousin, Pablo Ortega-Deballon, Abderrahmane Bourredjem, Alexandre Doussot, Valentina Giaccaglia, and Isabelle Fournel.
    • *INSERM, CIC1432, Clinical Epidemiology/Clinical Trials Unit, Clinical Investigation Centre, Dijon University Hospital, Dijon, France†Department of Digestive Surgery, Dijon University Hospital, Dijon, France‡Department of Surgery, General Surgery 1, Sant'Andrea Hospital, Sapienza University of Rome, Rome, Italy.
    • Ann. Surg. 2016 Aug 1; 264 (2): 252-6.

    ObjectiveIntra-abdominal infections (IAIs) after elective colorectal surgery impact significantly the short- and long-term outcomes. In the era of fast-track surgery, they often come to light after discharge from hospital. Early diagnosis is therefore essential. C-reactive protein levels have proved to be accurate in this setting. Procalcitonin has been evaluated in several studies with conflicting results. This meta-analysis aimed to compare the predictive abilities of C-reactive protein and procalcitonin in the occurrence of IAIs after elective colorectal surgery.MethodsThis meta-analysis included studies analyzing C-reactive protein and/or procalcitonin levels at postoperative days 2, 3, 4, and/or 5 as markers of intra-abdominal infection after elective colorectal surgery. Methodological quality was assessed by the QUADAS2 tool. The area under the curve summary receiver-operating characteristic was calculated for each day and each biomarker, using a random-effects model in cases of heterogeneity.ResultsThe meta-analysis included 11 studies (2692 patients). An IAI occurred in 8.9% of the patients. On postoperative day 3, area under the curve was 0.80 (95% CI, 0.76-0.85) for C-reactive protein and 0.78 (95% CI, 0.68-0.87) for procalcitonin. On postoperative day 5, their predictive accuracies were 0.87 (95% CI, 0.80-0.93) and 0.90 (95% CI, 0.82-0.98), respectively. The accuracy of C-reactive protein and procalcitonin did not differ at any postoperative day.ConclusionsLevels of inflammatory markers under the cutoff value between postoperative days 3 and 5 ensure safe early discharge after elective colorectal surgery. Procalcitonin seems not to have added value as compared to C-reactive protein in this setting.

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